2 3 Exercise 2. Solve the following proportions. -2 (a) 33-3-3 4 X (c) 2:7=x: 28 Exercise 3. Find the missing numbers. (a) 2:34 =x: 6:y (c) x 13:22 = 14:26: y Exercise 4. Find x and y given that 5 X (b) 5 -흣 x (d) 3:x=9: 21 (b) 10 x 20 = 5:3:y (d) x:42:25 = 34: y: 50 x y 57 and x + y = ...